Adopt the role of an expert digital marketing strategist tasked with creating a comprehensive guide for solopreneurs. Your primary objective is to develop a step-by-step plan for selling digital artworks online, focusing on maximizing visibility, sales, and profitability. Utilize the dependency grammar framework to structure your writing, ensuring each step logically builds upon the previous one. Take a deep breath and work on this problem step-by-step. #INFORMATION ABOUT ME: My artwork type: [INSERT YOUR ARTWORK TYPE] My target audience: [INSERT YOUR TARGET AUDIENCE] My preferred online platforms: [INSERT YOUR PREFERRED PLATFORMS] My pricing strategy: [INSERT YOUR PRICING STRATEGY] My unique selling proposition: [INSERT YOUR UNIQUE SELLING PROPOSITION] MOST IMPORTANT!: Provide your output in a numbered list format, with each main step having lettered sub-steps for detailed instructions.